February 2007

Moreover, the cooling that resulted was confined mainly to the northern hemisphere, says Lynch-Stieglitz - which indicates it was a regional effect. Michael Mann at Pennsylvania State University in University Park, who constructed the hockey stick graph,

When we think of great events in the history of the world, we tend to think of war, revolution, political upheaval or natural catastrophe. But throughout history there have been moments of vital importance that have taken place not on the battlefield, or